Boat-lowering appliance.



No. 631,226. Patented Aug 15, I899. I F. R. PATEY.

'BOAT' LOWEBING APPLIANCE.

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u s3|,22s. Patented Aug. l5, I899. F. R. PATEY.

BOAT LOWERINQ APPLIANCE.

(Appliation filed Mar. 3, 1999.

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UNITED STATES PATENT OFFICE.

FRANK RUSSELL PATEY, OF BELFAST, IRELAND.

BOAT-LOWERING APPLIANCE.

SPECIFICATION forming part of Letters Patent No. 631,226, dated August15, 1899.

Application filed March 3, 1899. Serial No. 707,638. (No model.)

To all whom it may concern.-

Be it known that I, FRANK RUSSELL PATEY, a subject of the Queen of GreatBritain and Ireland, and a resident of Belfast, in the county of Antrim,Ireland, have invented certain new and useful Improvements in Boat-Lowering Appliances, of which the following is a specification.

This invention has reference to improvements in boat-lowering appliancesmore particularly adapted for use on board ship, and has for its objectto enable a boat to be lowered into the water with ease and safety eventhough the ship should have a considerable list or inclination to oneside and without requiring a large crew to effect this.

Referring to the drawingswhich form part of this specification, Figure 1is a side view from amidships of the appliance, showing the boat restingin its chocks; and Fig. 2 is an end view showing the boat raised fromits chocks and suspended ready for lowering.

According to this invention when applied on board ship the boat issuspended from an oscillating framework instead of the ordinary davits,constructed and operated all as follows:

The framework consists of two vertical standards a, connected at theirtops by a horizontal transverse bar I) or stay, or it may be made in onepiece of a bar bent into the requi-- site form. The vertical standardsare jointed to the deck near the ships side at c at a distance apart toallow of the boat passing between in a manner to permit of anoscillating I The boat is suspended from the horizontal bar b of frameby ropes passing through blocks 1-, secured to the bar and carried tothe drum 0 of an ordinary winch erected on the deck near the boat orboats and furnished with a brake and which may be actuated by hand, asshown, or otherwise. To the winch or other convenient part a smalloscillating part or framefis jointed, and rotating in this frame f ismounted one end of a long screwed spindle g, held in position by a pinengaging with a groove on its end and supported by the parallel rods hand cross-head i, sliding thereon. The screwed spindle g is rotated bymeans of a hand-actuated screw-wormj and worm-wheel lo, or bevelwheelgearing may be used. The screwed spindle g screws into a nut l, securedto the ends of two angled stays m, which are connected to the horizontalbar of the framework by eyes n, stops 0 being provided on the bar I) toobviate any tendency to convergence of the angled stays.

. The action is as follows: When it is desired I to lower a boat overthe ships side, the boat is first raised off its checks by the winch andthe oscillating framework and boat is gradually pushed outward byrotating the screwed spindle until the maximum distance from the shipsside is reached or preferably when the oscillating frame forms an angleof forty-five degrees with the deck, when the boat is 10\V* ered intothe water.

With this arrangement two boats may be .used in conjunction with onelowering appliance, one boat being carried on the deck in side of theother, or three may be used, one carried suspended to the oscillatingframe.

Having now described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In a boat-lowering apparatus the combination of an oscillating frame,from which the boat may be suspended, with a screwed spindle controllingthe movement of said oscillating frame, worm-wheel gearing for operatingsaid screwed spindle, and means for raising and lowering the boat on theframe, substantially as described.

2. In a boat-lowering apparatus, the com bination of an oscillatingframe pivoted at its lower end to the deck, with a nut, means connectingsaid nut to the upper part of the frame, a screwed spindle working insaid nut, wormwheel gearing to operate the spindle and means for raisingand lowering the boat on the frame.

3. Aboat-lowering apparatus having an oscillating frame, a nut and anglebrace-bars connecting said nut and the frame, in combination with anoperating screwed spindle working in said nut, substantially asdescribed.

4. A boat-lowering apparatus having an 03- name to this specification inthe presence of cillating frame, a nut connected therewith, a twosubscribing witnesses. screwed spindle working in said nut and anoscillating part f carrying said spindle and FRANK RUSSELL PATEY' 5means for operating said spindle, snbstan- Witnesses:

tially as described. ARTHUR GEORGE HARRIS,

In testimony whereof I have signed my CHAS. B. FREVVOO D.

